06-23-2009
Let me guess, you're compiling on a 64bit architecture.
sizeof() is a compile-time instruction and will, in your case, return the size of the pointer for the character array. Try declaring the a macro for the size of the array & use that macro for the recv() call.
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LEARN ABOUT DEBIAN
xtnumber
XtOffset(3) XT FUNCTIONS XtOffset(3)
NAME
XtOffset, XtOffsetOf, XtNumber - determine the byte offset or number of array elements
SYNTAX
Cardinal XtOffset(Type pointer_type, Field field_name);
Cardinal XtOffsetOf(Type structure_type, Field field_name);
Cardinal XtNumber(ArrayVariable array);
ARGUMENTS
array Specifies a fixed-size array.
field_name
Specifies the name of the field for which to calculate the byte offset.
pointer_type
Specifies a type that is declared as a pointer to the structure.
structure_type
Specifies a type that is declared as a structure.
DESCRIPTION
The XtOffset macro is usually used to determine the offset of various resource fields from the beginning of a widget and can be used at
compile time in static initializations.
The XtOffsetOf macro expands to a constant expression that gives the offset in bytes to the specified structure member from the beginning
of the structure. It is normally used to statically initialize resource lists and is more portable than XtOffset, which serves the same
function.
The XtNumber macro returns the number of elements in the specified argument lists, resources lists, and other counted arrays.
SEE ALSO
XtGetResourceList(3), XtSetArg(3)
X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
X Version 11 libXt 1.1.3 XtOffset(3)